The first integrative taxonomy study of the root lesion nematode Pratylenchus in Brazilian sugarcane identified Pratylenchus zeae as predominant in São Paulo fields, and showed P. brachyurus is overlooked by traditional methods.
In a study of bacterial symbionts of cowpeas in Brazil, ten bacterial genera were classified as rhizobia, highlighting the promiscuity of cowpea in associating with a diverse array of bacteria.